WO1992002014A1 - Magnetic head - Google Patents

Magnetic head Download PDF

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Publication number
WO1992002014A1
WO1992002014A1 PCT/JP1991/000945 JP9100945W WO9202014A1 WO 1992002014 A1 WO1992002014 A1 WO 1992002014A1 JP 9100945 W JP9100945 W JP 9100945W WO 9202014 A1 WO9202014 A1 WO 9202014A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
data
magnetic
head
writing
read
Prior art date
Application number
PCT/JP1991/000945
Other languages
French (fr)
Japanese (ja)
Inventor
Shigeru Izawa
Hidefumi Suzuki
Original Assignee
Kabushiki Kaisha Csk
Nihon Card Center Kabushiki Kaisha
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/488Disposition of heads
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K5/00Methods or arrangements for verifying the correctness of markings on a record carrier; Column detection devices
    • G06K5/02Methods or arrangements for verifying the correctness of markings on a record carrier; Column detection devices the verifying forming a part of the marking action
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/08Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
    • G06K7/082Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors
    • G06K7/083Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive
    • G06K7/084Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes using inductive or magnetic sensors inductive sensing magnetic material by relative movement detecting flux changes without altering its magnetised state
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127Structure or manufacture of heads, e.g. inductive
    • G11B5/265Structure or manufacture of a head with more than one gap for erasing, recording or reproducing on the same track

Abstract

A magnetic head (1) which reads/writes data magnetically from/on a magnetic recording medium is provided with a writing head (2) dedicated to writing of data and two reading heads (3a, 3b) dedicated to reading of data. Since the reading heads (3a, 3b) are provided on both sides of the writing head (2) in the direction of a data track (11) of the magnetic recording medium and two magnetic shielding plates are provided between the writing head (2) and the respective reading heads (3a, 3b) respectively, the processing of data comprising: 1) reading of data, 2) writing of data and 3) verifying of data can be performed in two steps, and the processing speed can be improved. Also, the processing of the data recorded in magnetic bar codes which comprises: 1) erasing of data, 2) verifying of data, 3) writing of data and 4) verifying of data can be performed in two steps too, and the processing speed thereof is also improved.

Description

Akira fine

Uz de to the magnetic -

[Technical field ]

The present invention is, with respect to magnetic cards for use as a Prin Pay Doka Doyaku registration Tsu preparative card relates head to a magnetic used to perform the reading and writing of data.

[Background Art〗

Usually, came and went the writing of data to the magnetic card is read-to confirm the written content (hereinafter referred to as base Re ferenc b) is carried out. Their to, the fifth and sixth conventional data reading can for magnetic shown in FIG Seo de 4 0 1 stroke data (data collected by rats one scan for click 1 1) read - or write for the other hand it can only, included data of the writing and the base re ferenc Lee had been done in a different stroke.

The cormorants I described above, since the head to conventional magnetic can not simultaneously write and read-data, if cormorants line processing of data in the magnetic card, read-in ① data Remind as in FIG. 5, ② of new data writing, will require an three strokes of ③ base re ferenc Lee, it takes a long time to process.

In addition, when processing the recorded data Ri by the magnetic bar co-one passed to the data door rack 1 1 of the magnetic card, sixth Ni Let 's are shown in Figure ① magnetic bar of degaussing, ② base Li off § Lee, ③ writing (newly magnetization), Ri Do not require a four-stroke of ④ base re ferenc Lee, - it takes a long time to layer processing.

The present invention solves the disadvantages of using the head to the above prior art, to reduce the number of strokes without changing the processing contents, it is an object that you achieve on improvement of the processing speed.

[Disclosure of the Invention]

The present invention for achieving the above object, the magnetic heads to perform reading and writing of data magnetically on a magnetic recording medium, one data write-only write heads of the two de one evening read - and a tool de to a read-dedicated to a read-above, provided Seo de, by disposing on both sides of the de Ichita preparative racks direction of the magnetic recording medium of the 'source de to for the writing , because the provided magnetic shielding plate between the head into a read-each and head to a said writing, read-in ① data, ② writing, the processing of the data ing from ③ base re ferenc Lee can and this done in two strokes, there is effect that processing speed is improved.

In addition, ① demagnetized for the recorded data Ri by the magnetic bar code, ② base Re ferenc Lee, ③ writing, Ki out and the child that is in the process is also a two-stroke ing from ④ base Re ferenc Lee, the processing speed improves.

Invention of the second term, in the invention of the first term, characterized that you accommodating the head to a read-and Uz de to write into a single case.

Sectional view of a magnetic to a head arrangement according to an embodiment of the BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is the present invention,

Figure 2 is Pro click diagram showing the reading and writing control unit of rie da one Writer device of a magnetic card which had use the head to the magnetic of FIG. 1, FIG. 3 a, b are the first view magnetic data collected by the heads in the magnetic recording medium la, - time Ji catcher over preparative showing input and output signals when scanning the source click,

Figure 4 a, b the Thailand whip ya one preparative showing input and output signals when scanning the magnetic bar code in magnetic f head of Figure 1,

Figure 5 and Figure 6 is a schematic diagram illustrating a process step in the case of performing data processing in head to conventional magnetic.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, you described with reference to the accompanying drawings embodiments of the present invention.

Figure 1 is the magnetic according to an embodiment of the present invention, is a cross-sectional view showing the structure of a Soviet de.

Magnetic heads 1 of the present embodiment, and one data write-only head 2 and two data read Installing F for read-dedicated head 3 a to write, the 3 b in one case equipped with a. Reading f head 3 a, 3 b for Ri is, across the Uz de 2 to write, in a line and distribution on both sides of the direction along the data Bok rack when performing reading and writing of Isseki de side-by-side there. Further, there are set only each between head 2, and read into a Ri head 3 b and the write Tsu between de 2 a magnetic shielding plate 4 is to use F for read - head 3 a and write . Therefore, even when energized each core simultaneously, it its magnetic field is not the Eikyouwooyobosuko each other.

Head for the write 2 consists Coil le 2 1 and forces et exciting the core 2 0 and core 2 0. Further, head 3 a, 3 b to a read-above consists Coil le 3 1 Metropolitan for detecting the magnetic flux passing through the core 3 0 and core 3 0 respectively.

Above the magnetic shows write and read control unit of rie da one line evening device of a magnetic card with a source de in Figure 2. Ni will Yo in Figure shown, reading and writing control unit 5 of this embodiment, DZA converter unit connected to the head 2 to a viewing writing magnetic heads 1 and (Digital Ana log conversion unit) 6, a reading to a Ri, Seo de 3 a, 3 b which respectively connected to the a / D converter part (analog-digital converting part) 7, a comparing unit 8 connected to each a / D converter 7, the made and a comparison unit 8, and a control unit 9 connected to the DA converter 6.

The control unit 9 sends the new data written into the magnetic card to a comparator 8 with DZA converter 6.

The comparing unit 8, and was sent Ri good control unit 9 data head 3 a or 3 ratio Kisame: a read - signal detected by b to a Ri preparative read. Incidentally, just when cormorants line only read-in data is not performed comparison by the comparing unit 8, and sends the read - signal to the control unit 9. The controller 9 transmits a Ri signal reading sent to the external processing instrumentation 置等.

Next, the FIGS. 3 and 4 the operation of this embodiment will be described with refer.

Figure 3 is a tie Mucha preparative showing the 'output signals Seo de 1 to magnetism when processing data of the magnetic card 1 0 using a magnetic f head 1 of the present embodiment. In the figure, the time (t) is the elapsed time, the input (Ra) of the input signal by Tsu de 3 a to a read-output of the (W) output signal by the write heads 2, the input (Rb ) shows, respectively Re its input signal by heads 3 b for reading. Further, FIG. 3 a shows a step for Ri preparative read data in the forward path during the insertion of the magnetic card 1 0 rie Darai evening device, the third panel b writing and data during the backward It shows the step of performing the re ferenc Lee.

In the forward path shown in FIG. 3 a, read - for heads 3 a, head 2 to a viewing writing, the scanning data collected by La Uz click 1 1 in the order of Uz de 3 b to a read is performed. Ni will Yo shown, the output (W) is rather non-input (Ra) and the input (Rb) although some delay time due to the order of scanning the same waveform.

In the return path shown in Figure 3 b, the scanning of the data collected by the rack 1 1 in reverse order it is performed as the forward. Ni will Yo shown, output (W) type (Ra) Ri Do the same waveform, to a read-by writing f head 2 and writing of data, Yorube Re ferenc Lee Seo de 3 a It is made at the same time by the force s 1 stroke. Its, the output) and than the input and (Ra) in and the child to compare me by the comparison section 8, of the correctly data writing is sure have been made.

More than shown in the jar I was, according to the present embodiment read-in data, writing, kill in this transgression to perform the base Re ferenc Lee in two strokes of the round-trip.

Next, with reference to the embodiment, showing input and output signals when processing the recorded data I by the magnetic bar code on the magnetic card 1 0 to the fourth diagram of Thailand Muchiya one Bok.

In the figure, the time (t), the input (Ra), (Rb) Output (Vf) is the same as that shown in Figure 3. Further, FIG. 4 a shows a step for demagnetizing and base Re ferenc Lee magnetic bar in the forward path when the 揷入 magnetic card 1 0 Li Darai evening device, Figure 4 b is data in the return path It shows the step of performing a write (magnetization) and Baie Li incompatibility. Forward, write f head 2 and reading heads 3 a on the returning route, 3 b data collected by rack scan order is the same as the order shown in the example of FIG. 3. In the forward path shown in FIG. 4 a, degaussing is performed by head 2 to a write after the magnetic barcode one de that by the f for read- head 3 a reading. Although Oh Ru represents an output signal when the DC demagnetization in the figure, may be performed AC demagnetization. Since head 3 b to a reading for scanning a magnetic bar code after demagnetization, it does not detect the no signal. Therefore, the output (W) and than the input and (Rb) in the this comparing the comparison unit 8, is confirmed and this demagnetizing was made with certainty.

In the return path shown in FIG. 4 b, after the ac magnetization of the magnetic bar according to head 2 is performed to write, to a read - reading of the magnetic bar code magnetized Ri by the source de 3 a Ri It is carried out. Therefore, the output (W) and input (Ra) and Ri by the and the child to compare the comparison unit 8, writing (magnetization) of correctly data is are they Luke is confirmed.

According to this embodiment the power sale good above, De 磁及 Bibe Re ferenc Lee magnetic bar code, performs writing of data and base and Re ferenc Lee each one stroke, all for a total two-stroke processing the can and the line cormorant this.

In this embodiment, an example has been described in which had use the head 1 to the magnetic processing of data of the magnetic card 1 0, other magnetic cards 1 0, a variety, such as a magnetic disk or magnetic drum goes without saying that it is the this used to process the data in the magnetic recording medium.

Claims

Asked of range
(1) Te your Rere to the soil to the magnetic perform the reading and writing of magnetic data on a magnetic recording medium,
A head to one data write only for writing, and a head to two data read - for read-exclusive,
The head to a read-above, set by arranging on both sides of the data collected by rack direction of head of the magnetic recording medium to a said writing,
Head to the magnetic characterized that you provided a magnetic shield plate between the head into a Ri Tsu de each reading to a said writing.
(2) magnetic heads according to claim 1, characterized that you accommodating the heads for read-and heads for writing into a case.
PCT/JP1991/000945 1990-07-20 1991-07-16 Magnetic head WO1992002014A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP19268490A JPH0479006A (en) 1990-07-20 1990-07-20 Magnetic head
JP2/192684 1990-07-20

Publications (1)

Publication Number Publication Date
WO1992002014A1 true true WO1992002014A1 (en) 1992-02-06

Family

ID=16295326

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1991/000945 WO1992002014A1 (en) 1990-07-20 1991-07-16 Magnetic head

Country Status (2)

Country Link
JP (1) JPH0479006A (en)
WO (1) WO1992002014A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0640954A2 (en) * 1993-08-31 1995-03-01 Sony Corporation Magnetic head devices for data cartridges
US8780682B2 (en) * 2012-11-07 2014-07-15 Oracle International Corporation Rotary head data storage and retrieval system and method for data erasure
US8793713B2 (en) 2012-11-07 2014-07-29 Oracle International Corporation Rotary head data storage and retrieval system and method with tape medium having transverse primary data tracks and longitudinal secondary data track
US8869179B2 (en) 2011-06-17 2014-10-21 Oracle International Corporation Rotary head data storage and retrieval system and method
US8897113B2 (en) 2012-11-07 2014-11-25 Oracle International Corporation Rotary head data storage and retrieval system and method for data verification
US9324347B2 (en) 2012-09-19 2016-04-26 Oracle International Corporation Apparatus and method for controlling tape movement in a rotary head data storage system and retrieval system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330263Y2 (en) * 1972-12-15 1978-07-28
JPS6159608A (en) * 1984-08-29 1986-03-27 Tokyo Electric Co Ltd Shield case for read after write magnetic head
JPS6457413A (en) * 1987-08-27 1989-03-03 Matsushita Electric Ind Co Ltd Thin film magnetic head

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330263Y2 (en) * 1972-12-15 1978-07-28
JPS6159608A (en) * 1984-08-29 1986-03-27 Tokyo Electric Co Ltd Shield case for read after write magnetic head
JPS6457413A (en) * 1987-08-27 1989-03-03 Matsushita Electric Ind Co Ltd Thin film magnetic head

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0640954A2 (en) * 1993-08-31 1995-03-01 Sony Corporation Magnetic head devices for data cartridges
EP0640954A3 (en) * 1993-08-31 1996-12-04 Sony Corp Magnetic head devices for data cartridges.
US5854726A (en) * 1993-08-31 1998-12-29 Sony Corporation Magnetic head device for data cartridge
US8869179B2 (en) 2011-06-17 2014-10-21 Oracle International Corporation Rotary head data storage and retrieval system and method
US9324347B2 (en) 2012-09-19 2016-04-26 Oracle International Corporation Apparatus and method for controlling tape movement in a rotary head data storage system and retrieval system
US8780682B2 (en) * 2012-11-07 2014-07-15 Oracle International Corporation Rotary head data storage and retrieval system and method for data erasure
US8793713B2 (en) 2012-11-07 2014-07-29 Oracle International Corporation Rotary head data storage and retrieval system and method with tape medium having transverse primary data tracks and longitudinal secondary data track
US8897113B2 (en) 2012-11-07 2014-11-25 Oracle International Corporation Rotary head data storage and retrieval system and method for data verification

Also Published As

Publication number Publication date Type
JPH0479006A (en) 1992-03-12 application

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